Electric accumulator-plate.



No. 708.334.. Patented Sept. 2, |902.

' FISCHER.

ELECTRIC ACCUTWULATH PLATE.

" (App1ica;i m medqu 21; 1902.)

Patented Sam. 2, 1902.'

s' 'shefs snee; 2.

(No Model.)

y irren @rares I arent Unities..

ALEXANDER FISCHER, OF BERLIN,` GERMAN Y.

ELECTRIC Aoouwi ULAToa-PLATE.

SPECIFICATION forming part of Letters Patent N o. 708,334, dated September 2, l 902.

Application filed June 21,1902;

Be it known that I, ALEXANDER FISCHER, a subject of the King of Irussia, residing at Berlin, in the Kingdom of Prussia, in the German Empire, have invented new and usei'ul Improvements in Electric Accumulator- Ila'tcs, of which the following is a specilica- Y plate; Fig. 25, a side elevation on the line A B of the plate.

of Fig. l; Fig. 4, a side elevation, and Fig. 5 a front elevation, of the same plate on a larger scale; Fig. G, a cross-section on ,the line C D. of Fig. 5, while Fig. 7 is a front elevation, and Fig. 8 a cross-section, of another construction ASimilar letters refer to similar parts througho'ut the several views.

In carrying out myinvention I bend or corrugate a plate a of lead to produce a number of relatively deep parallel grooves b. At the apex o of Veach corrugation I cut out a number of tonguesd, in this way producing the openings-e for the passage of the electrolyte. Along the top and bottom edge of the plate I provide a bar` or rod f and g, respectively, in order to stien the plate laterally. The framework of the plate is now inished. It

4can now be formed land then provided ,with

the active mass or first provided with the "active mass. and then formed.

` The groovesb arebest formed by placing astrip of cardboard or the like of suitable thickness in each groove, so that the distance between` the same is maintained. This can, however, also be done by irst placinga sheet i of cardboard on each side of the metal sheet and by then folding the metal sheet'and cardboard together. Whenthe folding is comsernlNn. 112,624. (Nt manif' pressed into the plates. and moved in the di` rection of the length of the grooves to-an ex tent corresponding to the desired length oi' the tongues to be formed. In this manner the tongues are simultaneously cut and bent outward. The tongues can be produeedon both sides of the plates at the same time, or first on one side and then on the other.

Instead of movingthe knives the press hold-` ing the plates may be moved. Further, I may employ a single row of knives alone, or one long knife, arranging the plate to be moved step by stepto cut each tongue. i

The construct-ion shown in Figs. 7 and S only differs from thatabove described bythe employment ofthe stiening-pieces h.. As evident from the drawings, these pieces are folded with the plate and are spaced at intervals in the height thereof.

What I claim, and desire to secure by Letters Patent of the United States, is 1.,-Aecumulatoryplate comprising in combi-v nation: a plate of lead foldedinto serpentine form; tonguescut out of said plate at the apex of each fold and bent outward; and active mass disposed between said folds; substantially as set forth.

2. T he combination with .outward 5 substantially as set forth.

'a serpentine- L folded accumulator-plateof tongues ont out l 'ofsaid plate at the apex of each fold and bent 9o' 3. The 'combination with a' serpentineof said plate at-the apex 'of eachV fold and bent outward, and s tilening-pieces folded with said plate at intervals in the height thereof; substantially-as set forth. I

4. The method of producing accumulatorplates which consists in n' (l) folding a sheet of lead into serpentine form; (2.) cutting tongues `10o bending said tongues outward; substantially tially as set forth. as set forth. l In testimony whereof I have signed .my 5. The method 0f producing accnmulator name t0 this specification in the presence ofout of said plates at the apex of said folds and g'ivingthe plate the desired shape; substanzo plates which consists in (1) foldinga sheet of twoI subscribing Witnesses.

lead into serpentine form; (2) outtingtongues ALEXANDER FISCHER." out of said plate at the apex of said folds and Witnesses: bending said tongues outward; filling the FRANZ SCHWENTERLEY,

lgrooves of said plate with active mass; and WOLDEMAR HAUPT. 

